From 989299e59f8c3584cc78f69d23197eaede98ae5e Mon Sep 17 00:00:00 2001
From: wangmm0220 <wangmm0220@gmail.com>
Date: Tue, 17 Aug 2021 12:11:31 +0800
Subject: [PATCH] [TD-6046]<fix> fix ts derivative error

---
 src/query/src/qExecutor.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/src/query/src/qExecutor.c b/src/query/src/qExecutor.c
index 7b320d9f58..08146b6200 100644
--- a/src/query/src/qExecutor.c
+++ b/src/query/src/qExecutor.c
@@ -3645,7 +3645,6 @@ void copyTsColoum(SSDataBlock* pRes, SQLFunctionCtx* pCtx, int32_t numOfOutput)
   bool    needCopyTs = false;
   int32_t tsNum = 0;
   char *src = NULL;
-  int32_t preFunctionId = TSDB_FUNC_TS_DUMMY;
   for (int32_t i = 0; i < numOfOutput; i++) {
     int32_t functionId = pCtx[i].functionId;
     if (functionId == TSDB_FUNC_DIFF || functionId == TSDB_FUNC_DERIVATIVE) {